> What you are trying to do should be possible with> NGX_HTTP_SUBREQUEST_IN_MEMORY - this way subrequest body will be> available in memory instead of being sent to a client. But it's> not currently supported for fastcgi.

Thanks for the clarification and your reply. I've taken to ignoring request and response bodies for now since in my use case, the auth_request backend really only needs to respond with redirections for Single Sign On.

Is the thinking that this may eventually be supported by other modules like FastCGI/uWSGI or is it related to some technical issue?